用tdi发包，速度超级慢，帮忙看看怎么解决

我用tdi发包，发一个包要0.2秒，
从服务器上接收一个大的多的包，只要0.01秒
我看主要时间都是在waitforsingleobject了

DeviceObject = IoGetRelatedDeviceObject(FileObject);

Irp = TdiBuildInternalDeviceControlIrp(TDI_SEND, DeviceObject,
    FileObject,
    Event, IoStatus);

if (Irp == 0) return STATUS_INSUFFICIENT_RESOURCES;

Mdl = IoAllocateMdl(Data, Length, FALSE, FALSE, Irp);

if (Mdl == 0) return STATUS_INSUFFICIENT_RESOURCES;

MmProbeAndLockPages(Mdl, KernelMode, IoModifyAccess);

Mdl->Next = NULL;

TdiBuildSend(Irp, DeviceObject, FileObject, 0, 0, Mdl, 0, Length);

Status = IoCallDriver(DeviceObject, Irp);

if (Status == STATUS_PENDING)
    Status = KeWaitForSingleObject(Event, UserRequest, KernelMode, FALSE, 0);